You can start working on creative writing activities with your students taking into account their age and their interests. You can follow some simple guidelines if you want to help them start writing their own story:

1. Gathering Ideas-brainstorming: ask your students to write down anything that comes to their minds, so they don't forget their ideas. Give answers to questions like: "What do I want to write about?", "What is interesting to me?"
2. Visualization- Settings: Here students have to think where their stories take place and describe the setting using their senses: hearing, touch, taste, feeling and sight.
3. Characters:students need to select a main character for their story, give him/her a name, describe him/her. They can get exercise by describing one of their peers.
4. Dialogue: students can listen to each other and write down interesting dialogues to get practice, they can also work in pairs
5. Narration: narration can be in the first or third person narration
6. Plot:the plot is a structure of the story. It's really important as it moves the story along to the very end. Students can be asked to write the first paragraph of their story. The first sentence needs to grasp the readers' attention, so they will continue reading.
7. Research: It is really important to look for information about historical events, people, or simple things like how flowers grow before they actually start writing their story. They can write better, when they know more, about what they write.
8. Writing the first draft: having all the above in mind, students are ready to write their first story
9. Reading aloud:Having students read aloud their work to each other is a rewarding experience, for the pleasure of hearing their own work and of getting and giving feedback. They can better understand how the words and sentences are working together and consider what they can do better.

A nice example: "Everybody Writes"

There are many examples of schools who use creative writing in their everyday teaching. Everybody Writes was a four-year writing project managed in partnership by Booktrust and the National Literacy Trust, and funded by the Department for Education in UK, up until March 2011.Everybody Writes provided teachers with innovative ideas and practical resources to help them run projects to get children in primary and secondary schools excited about writing. The key principles of Everybody Writes were:

• Finding ways to take writing beyond the classroom
• Providing students with exciting stimuli for writing based on their experiences and interests
• Establishing real audiences for children's writing
• Writing across the curriculum